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PDF ATS137 Data sheet ( Hoja de datos )
| Número de pieza | ATS137 | |
| Descripción | Single Hall Effect Switch | |
| Fabricantes | Anachip | |
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Single Hall Effect Switch
ATC
ATS137
Features
- 3.5V to 20V DC operation voltage
- Temperature compensation
- Wide operating voltage range
- Open-Collector pre-driver
- 25mA maximum sinking output current.
- Reverse Polarity Protection
Applications
- VCD/DVD loader, CD/DVD ROM
- Cover detector
- Speed measurement
- Home appliances
- Home safety
General Description
ATS137 is an switched Hall-Effect IC which is for
contactless switching applications. The device
includes an on-chip Hall voltage generator for
magnetic sensing, an amplifier that amplifies the
Hall voltage, a schmitt trigger to provide switching
hysteresis for noise rejection, and an open-collector
output. The bandgap regulator allows a wide
operating voltage range.
ATS137 is rated for operating temperature range
from -20°C to 85°C and voltage range from 3.5V to
20V.
Ordering Information
ATS137 X - X X X - X
Single Hall-effect Switch
Wafer Body
Package
Blank or
P: SIP3
A~Z : if necessary W: SOT23
to specify
Lead
Packing
L : Lead Free Blank : Tube or Bulk
Blank: Normal A : Tape & Reel
Magnetic
Characteristics
A or B
Typical Circuit
3.5V ~20V
Vcc
ATS
137
DO
Vss
RL
Digital Output
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.A5 Jul 14, 2004
1/7
1 page  
Single Hall Effect Switch
ATC
ATS137
Application Information (Continued)
Vo will turn on(low) if the S magnetic flux larger than operation point (Bop), and turns off whenever the
magnetic flux is removed and lower than release point (Brp). The related waveforms are shown in Fig.3.
magnetic flux (mT)
Bop
S Brp
Marking side
Vo
Hall Effect switch
Vcc
Vce(sat)
Fig.3 Vo and magnetic flux variety
t
t
The major applications are for contactless switching and shown as follows:
- VCD/DVD loader, CD/DVD ROM: Detect if the tray is opened or closed
- Cover detector (open/close): Cellular phone cover detector, Refrigerator door detector, Microwave oven
door sensor… etc
- Home safety: instead of reed relay to detect the situation of door/window.
- Due to contactless and without mechanical contact point, its reliability and life cycle are much longer than
reed relay. In addition, its switching speed is much faster than mechanical devices.
Anachip Corp.
www.anachip.com.tw
Rev. A5 Jul 14, 2004
5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ATS137.PDF ] | |
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